Terry-loom.



H. L. HOHLFELD.

TERRY LOOM' APPLICATION man APR. I4. 1922.

1 ,266,267, Patented May14,1918.

3 SHEETSSHEET I.

H. L. HOHLFELD.

TERRY LOOM.

APPLICATION FILED APR. 14. I917.

Patented May 14, 1918.

3 SHEETS-SHEET 2- 3 .wwwe

H. L. HOHLFELD.

TERRY LOOM.

APPLICATION FILED APR. 14, 1917.

I 1,266,267, Patented May14, 1918.

3 SHEETS-SHEET 3- r f 11116711207: A wzma/zZ. 7766466143.

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HERMAN L. HOI-ILFELD, OF PHILADELPHIA, PENNSYLVANIA.

TERRY-LOOM.

Specification of Letters Patent.

Patented May 1a, 1918;

Application filed April 14, 1917. Serial No. 161,950.

T 0 all whom it may concern:

Be it known that I, HERMAN L. HOHL- rnLo, a citizen of the United States, and a resident of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain new and useful Improve ments in Terry-Looms, of which the f0llowing is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in terry looms particularly adapted for weaving Turkish towels, and wherein the relation of the path of movement of the lay relatively to the fell of the cloth is periodically varied For the production of the terry or pile loops after the insertion of a predetermined number of picks of ground weft-threads.

The primary object of my invention is to improve upon the mechanism for varying the relation of the path of movement of the lay relatively to the fell of the cloth. A further object of my invention is to provide a novel, simple and eiiicientmeans, controlled by a acquard mechanism, in accordance with a prescribed design, for the insertion of any desired number of picks of figuring weft-threads at any desired place or places. in addition to the necessary picks of ground weft-threads for the production of the terry or pile loops; and a further object of my invention is to provide a means. controlled by the jacquard mechanism, for preventing the production of the terry or pile loops at certain predetermined intervals when it is desired to weave a predetermined length of plain cloth, as, for example, between two towels.

Viith these and related objects in view, my invention consists in the novel construction and combinations of parts hereinafter described and claimed.

In the accompanying drawings, illustrating my invention,

Figure 1 is a front elevation of sutlicient of a terry loom to illustrate my invention and having one form of embodiment of my invention applied thereto.

Fig. 2 is a longitudinal, vertical sectional view of the loom.

Fig. 3 a detail, showing part of the mechanism which controls the production of the terry loops.

Fig. 4. is a detail showing part of the mechanism which controls the production of plain fabric.

Referring to the drawings, 2 designates the main frame of the loom, 3 the breast beam and 4 the lay.

The pile-forming or terry warp-threads 5 are drawn from a suitable reel 6 which is supported by brackets on the main frame 2, and the ground warp-threads 7 are drawn from a suitable reel 8 which is also supported by brackets on the main fram 2, in the usual manner.

The terry threads 5 P2155 from the reel 6 down to and beneath a rod or shaft 9, thence to and through eyes in the loom harness 10, and thence to and through the reed 11 of the lay i to thefell 12 of the cloth 13 being woven; and the ground warp-threads 7 pass from the reel 8 up and over a rod or shaft 14 under and over rods 15 and thence to and through eyes in the loom harness 10, and thence to and through the reed 11 to the fell 12 of the cloth 13.

The loom harness 10 is connected to a suitable jacquard mechanism 16 which controls the harness 10 for the proper raising and lowering of the warp threads 5 and 7 during the weaving operation, the jacquard mechanism being provided with the usual lifting wires 17 which are connected to the harness 10 and which are opera-ted by the jacquard cards, during the operation of the loom, in the usual manner, well known to those skilled in this art, to raise and lower certain of its operating wires at each pick of the loom.

The cloth 13 passes over the breast beam 3 to and over a rod or shaft 18, thence down to and under a roller 19, thence up to and over a roller 20 and thence down to and around a suitable takeup roller 21 upon which the finished cloth is wound.

The lay t is connected by a bar or rod 22 to a crank 23 on a shaft 2st which turns in hearings on the main frame 2 and is provided with a pulley 25 by means of which it may be driven from any suitable source of power. When power is applied to the pulley 25 the crank shaft 24 will be rotated and the lay t and its reed 11 will be thereby reciprocated toward and from the fell 12 of the cloth 13 to beat up the successive picks of inserted Weft threads.

The shaft 1% over which the ground warpthreads 7 pass forms part of a rocking frame 26 which is pivoted, at 27, to suitable brackets on the main frame 2;,and the shaft 13 over which the cloth 13 extends forms part of a rocking frame 28 which is pivoted, at 29, to suitable brackets on the main frame 2. The rocking frames 26 and 28 are provided with downwardly extending arms 30 and 31 which are pivotally connected by bars 32 and 33, respectively, to a centrally arranged arm 3% which is pivoted at 35, to the main frame 2, whereby, when the arm 3% is moved back and forth on its pivot 35, the frames 26 and 28 will be rocked back and forth on their pivots 2'7 and 29, respectively, thereby moving the warp-threads 5 and 7 and the cloth 13 extending between the shafts 14c and 18 bodily back and forth to move the fell 12 of the cloth 13 toward and from the path of movement of the lay i. A spring 36 con nect-ed to the lower end of the arm 34: and the frame 2 holds the arm 3% and frames 26 and 28 normally in the position shown in the drawings; and, in this normal position of these parts, an adjusting screw 37 on the arm 30 of the rocking frame 28 rests against the main frame 2 and limits the movement of the parts of the spring 36.

Pivoted, at 38, to the arm 3i is one end of a bar 39 having a hook portion 40 which, when the bar 39 is raised to the dotted line position shown in the drawings, is adapted to be engaged by a pin -11 projecting from the lay at, when the lay a is moved forward to beat up an inserted weft-thread. When the pin l1 thus engages the hook 40, the arm is moved forward with the forward movement of the lay t, thereby rocking the frames 26 and 2S and moving the fell 12 of the cloth 13 rearwardly to meet the reed 11 at its extreme forward position, and thereby causing the lay l/O beat up the pre viously inserted weft-thread or threads to the fell of the cloth. 7 Normally the hook bar 39 is down in the full line position in which it is unaffected by the movement of the lay t, and when the lay 4: is moved forwardly with the hook to in the full line position, the previously inserted weft-thread is beateh up to a temporary position in which it is a short distance from the fell 12 of the cloth, so that, subsequently, when the hook l0 is engaged by the pin 11, the fell 12 of the cloth will be moved rearwardly to meet the reed 11, as the lay l is moved forward to beat up the previously inserted weftthreads from their temporary position to the fell 12 of the cloth, and thereby form the terry pile of the warp-threads 5 extending between said temporary position and the fell of the cloth, while the ground warp-threads 7 are kept taut, in the usual manner well known to those skilled in this art.

The hook bar 39 is provided with a projccting pin l2 connected by a wire 1-3 to a spring at which is connected to the lower end of a wire to. T he upper end of the wire l5 is connected to one arm $6 of a bellcrank lever l7 which is fulcrumed on a bracket 13 on the main frame 2. The other arm :9 of the lever l? is connectedby a bar to one arm 51 of a bell-crank lever 52 which is fulcrumed on a bracket on the main frame The other arm 5i of the lever is connected by a wire 55 to the lower end of one 56 of the card-controlled lifting wires 17 of the jacquard mechanism 16. From the construction just described it will be readily understood that when the lifting wire is raised and lowered, the hook bar 39 will be raised to the dotted line position shown in the drawings to bring the hook l0 into position to be engaged by the pin t1. When the hook bar 39 is thus raised to the dotted line position, a tooth 57 on the lever 52 is engaged by a pawl 58 which is pivoted on the bracket 53 and moved into engage ment with the tooth 57 by a spring 59 connected at one end to the bracket .53 and at the other end to the pawl 58 and holding the pawl 58 constantly against the lever The pawl 58 is connected by a wire 60 to the lower end of one 61 of the card-controlled lifting wires 17 of the jacquard mechanism, whereby, when the pawl 58 is engaged with the tooth 5'7 and holding the hook bar 39 in the raised position, and the lifting wire (31 raised and lowered by the operation of the jacquard cards, the pawl 58 will be freed from the tooth 5'7, permitting the hook bar 39 to return by gravity to the full line position shown in Fig. 2. It will thus be understood by persons skilled in this art that the jacquard mechanism will dictate and control the number of picks of weft-threads that shall be inserted and beaten up to the temporary position prior to each successive rearward movement of the fell 12 of the cloth for the formation of the terry pile.

In order to weave a length of plain fabric, having no terry loops formed thereon, in the cloth being woven and to control such weaving by the jacquard mechanism 16, I provide the following:

Pivoted, at 62-, on the main frame 2 is one end of an arm 63 having a notch 64 formed therein which, when lowered to the dotted line position, is adapted to engage a pin 65 projecting from the arm 34: and hold the arm- 3% in its forward position when itis moved thereto by the engagement of the pin 41 with the hook 10. When the arm 63 is lowered to the dotted line position, and the notch 64 engagesthe pin 65 and holds the arm 3% in the for ward position, the fell 12 of the cloth 13 is thereby held in its rearward position, so that, while the fell of the cloth is thus held in its rearward position, eachforward movementof the lay 4 will beat up the previously inserted weftthread to the fell of the cloth for the production of plain fabric. When, however, the arm 63 is raised to its normal or full line position, the hook 39 may be operated, as previously explained, to again produce the terry pile in the fabric being woven.

The arm 63 is connected by a wire 66 to a spring 67 which is connected by a wire 68 to one arm 69 of a bell-crank lever 70 which is fulcrumed on the bracket 48. The other arm 71 of the lever 70 is comiected by a bar 72 to one arm 73 of a bell-crank lever 74 which is fulcrumed on the bracket 53;

. and the other arm 75 of the lever 74: is connected by a Wire 76 to the lower end of one 77 of the card-controlled lifting wires 17 of the jacquard mechanism 16, whereby when the lifting wire 77 is raised and lowered, the arm 63 will be raised from the dotted line position to the full line position. lVhen the arm 63 is thus raised to the full line position, a tooth 78 on the lever 74 is engaged by a pawl 79 which is pivoted on the bracket 53 and moved into engagement with the tooth 73 by a spring 80 which is connected at one end to the bracket 53 and at the other end to the pawl 79 and holds the pawl 79 constantly against the lever 7 4. The pawl 79 is connected by a wire 81 to the lower end of one 82 of the card-controlled lifting Wires of the jacquard mechanism 16, whereby when the parts are in the position shown in the drawings, and the lifting wire 82 is raised and lowered by the operation of the jacquard cards, the pawl 79 will free the-tooth 78 and lever 74: and permit the arm 63 to drop by gravity until it rests upon the pin 65 projecting from the arm 34 to permit the notch 64c'to engage the pin 65, as previously explained. It will thus be readily understood by those skilled in this art that the jacquard mechanism will dictate and control the beginning and ending of the production of the plain fabric.

In operating the loom, power is applied to the shaft 24 to actuate the lay 4., the jacquard mechanism 16 is actuated in harmony with the movements of the lay l and by th usual and well known mechanism; and weft shuttles are projected through the warp threads by the usual and well known devices, all as will be readily understood by persons skilled in this art.

During the weaving of the fabric, the jacquard mechanism, by its cards, controls the harness i0 for the raising and lowering of both the ground warp-threads 7 and the terry warp-threads 5 for the weaving of the ground or body of the fabric and for the production of the terry pile on either or both faces of the fabric in accordance with the prescribed design dictated by the cards of the jacquard mechanism 16. In

producing the-terry pile, sets of the re" quired number, usuallythree, of picks of ground weft-threads are separately inserted into the warp threads and beaten up to the temporary position rcarwardly of the fell 1.2 of the cloth, and, as rapidly as these sets of ground weft-threads are inserted and beaten up to the temporary position, they are successively beaten up to the fell 12 of the cloth, forming rows of terry pile loops between each set of ground warp-threads. While the picks of the ground warp-threads of each set are being inserted, the hook 39 is unaffected by the lay it; and, prior to the forward movement of the lay i, to beat up the last weft-thread of each set, the jacquard mechanism 16 raises its wire 56 to raise the hook bar 39 to the dotted line position and to engage the pawl 58 with the tooth 57 of the lever 52 to retain the bar 39 in the dotted line position, during the next forward movement of the lay 4. Now, as the lay at moves forward to beat up the last weft-thread of each set, the pin 4-1 engages the hook 40 and operates the frames 26 and 28 to move the fell 12 of the cloth rearwardly, as previously explained, for the beating up of the sets of ground weftthreads to the fell of the cloth for the formation of the rows of terry pile loops. Immediately following the beating up of each set of ground weft-threads to the fell of the cloth, and before the next forward movement of the lay at, the jacquard mechanism 16 raises its wire 61 to operate the pawl 58 to release the lever 52 and thereby permit the hook bar 39 to return by gravity to the full line position, in which it will be unaffected by the next forward movement of the lay a, and until it is again raised by the operation of the jacquard mechanism.

When it is desired to introduce figuring weft threads for the production of plain or colored designs in the fabric, any desired number of picks of figuring weft threads may be inserted between the picks of ground weft threads of the sets and between the sets ofpicks of ground weft threads, the inserted figuring weft threads being first beaten up to the temporary position rearwardly of the fell 12 of the cloth and subsequently beaten up to the fell of the cloth with the sets of ground weft-threads, as previously explained. As the figurin weft threads are thus introduced, they are ound into the fabric by the ground warp and weft-threads and they are floated on either face of the fabric for the production of the desired design controlled by the jacquard mechanism as the warp threads are raised and lowered for the picks of the figuring weft threads.

Thus it will be seen that the design of the cloth may be varied under the control ofthe jacquard mechanism by throwing the terry pile loops from one to the other of the two faces of the fabric or by the introduction and floating of-the fi uring weft threads on either face of the fzbric, or both.

When it is desired to weave a length of plain cloth having no pile loops, as, for example, in weaving the connecting fabric between two towels, the jacquard mechanism raises its wire 82 to operate the pawl 79 to release the lever 74:, and thereby permit the arm 63 to drop by gravity to and rest upon the pin on the arm 3%, just before the forward movement of the lay l beats up the last set of ground weftthreads to the fell of the cloth, in forming the last row of pile loops, and thereby moves the arm forward to move the fell 12 of the cloth rearward to meet the lay a, so that when the arm 3% is thus moved forward, the notch 64 in the arm 63 will engage the pin 65 and hold the arm 3% in the forward position, and thereby hold the fell 1:2 of the cloth in the rearward position adjacent to the reed 11. when the lay l is in the forward position, causing each subsequent forward movement of the lay to beat up the previously inserted weft thread to the fell of the cloth and the production of a plain fabric. lVhen the desired length of plain fabric has been produced, the jacquard mechanism 16 raises its wire 77 to raise the arm 63 and free the pin 65 from the notch 6st and permit the pawl 79 to be reengaged with the tooth 78 of the lever Tl to hold the arm 63 in the raised position un til it is desired to again produce a length of plain cloth. This being done, the arm 3% is again free to be operated by the hook bar 39 for the production of the terry loops, as previously explained.

I claim:

1. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means operative to efi ect a relative movement between the lay and the fell of the cloth, a jacquard mechanism including acard-controlled lifting wire, and means controlled by said wire to vary the movement between the lay of the fell of the cloth at certain predetermined intervals for the production of the terry pile.

2. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, a jacquard mechanism including a card-controlled lifting wire, and means controlled by said wire to move the fell of the cloth toward the lay at certain predetermined intervals for the production of the terry pile when the lay is moved. 7

3. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the naeaeev woven cloth, a movable lay, means to move the lay toward and from the fell of the cloth, a jacquard mechanism including a card-controlled lifting wire, and means operated by the lay and controlled by said wire to move the fell'of the cloth toward the lay at certain predetermined intervals for the production of the terry pile when the lay is moved.

l. In a terryloom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means to move the lay towardand from the fell of the cloth, means adapted to be operated by the lay to move the fell of the cloth toward the lay for the production of the terry pile when the lay is moved, a jacquard mechanism including a card-controlled lifting wire, and means controlled by said wire to operatively connect and disconnect thev last named means and the lay at certain predetermined intervals.

5. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means to move the lay toward and from the fell of the cloth, means operative to move the fell of the cloth toward the lay for the production of the terry pile when the lay is moved, the last named means including a hook adapted to be engaged with a part of the lay to operate the last named means by the lay when the hook is engaged therewith, a jacquard mechanism including a card-controlled lifting wire, and means controlled by said wire to engage said hook with said lay at certain predetermined intervals.

6. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means operative to effect a relative movement between the lay and the fell of the cloth, a jacquard mechanism including two independently movable lifting wires, means controlled by one of said wires to vary the movement between the lay and the fell of the cloth at certain predetermined intervals for the production of the terry pile, and means controlled by the other of said wires to prevent the operation of the last named means for the production of plain cloth.

7. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, a jacquard mechanism including two independently movable lifting wires, means controlled by one of said wires to move the fell of the cloth to a rearward position relatively to the path of movement of the lay at certain predetermined intervals for the production of the terry pile when the lay is moved, and means controlled by the other of said wires to hold the fell of the cloth in said rearward position during successive operations of the lay at certain predetermined intervals for the production of plain cloth.

8. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means to move the lay toward and from the fell of the cloth, a jacquard mechanism including two independently movable lifting wires, means operated by the lay and controlled by one of said wires to move the fell of the cloth to a rearward position relatively to the path of movement of the lay at certain predetermined intervals for the production of the terry pile when the lay is moved, and means controlled by the other of said Wires to hold the fell of the cloth in said rearward position during successive operations of the lay at certain predetermined intervals for the production of plain cloth.

9. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means to move the lay toward and from the fell of the cloth, and means operative to move the fell of the cloth toward the lay for the production of the terry pile when the lay is moved, the last named means including a hook adapted to be engaged with a part of the lay to cause the last named means to be operated by the lay when said hook is engaged therewith.

10. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth. a movable lay, means to move the lay toward and from the fell of the cloth, means operated by the lay to move the fell of the cloth to a rearward position relatively to the path of movement of the lay at certain predetermined intervals for the production of the terry pile when the lay is moved, and means operative to hold the fell of the cloth in said rearward position during successive operations of the lay at certain intervals for the production of plain cloth.

11. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means to move the lay toward and from the fell of the cloth, means operated by the lay to move the fell of the cloth to a rearward position relatively to the path of movement of the lay at certain predetermined intervals for the production of the terry pile when the lay is moved, and a pivoted arm having a notch therein, said arm being operative to cause its notch to engage a part of the last named means to hold the fell of the cloth in said rearward position during successive operations of the lay at certain intervals for the production of plain cloth.

12. In a terry loom, the combination of the frame thereof, supporting means for the warp threads, supporting means for the woven cloth, a movable lay, means to move the lay toward and from the fell of the cloth, means operated by the lay to move the fell of the cloth to a rearward position relatively to the path of movement of the lay at certain predetermined intervals for the production of the terry pile when the lay is moved, a pivoted arm having a notch therein, said arm being operative-to cause its notch to engage a part of the last named means to hold the fell of the cloth in said rearward position during successive operations of the lay at certain intervals for the production of plain cloth, a jacquard mechanism including a card-controlled lifting wire, and means operated by said wire to move said arm to bring its notch into a position to engage said part of the last named means.

In witness whereof, I have hereunto set o my hand this 13th day of April, 1917.

HERMAN L. HOHLFELD.

Gopiea of this patent may be ebtainefi for five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

